[attachment=14829]
ABSTRACT:
DTH is a new technology and it has matured to its full potential in other parts of the world. There are many applications that has been found everyday for exploitation of benefits of DTH.
The word ‘DTH’ is synonymous with transmission of digital video channel to home subscriber’s using a small dish antenna. The DTH utilizes a technology which enables a home to receive high speed internet broadband access data communication, voice over internet protocol (VOIP) telephony and much more using an open standard Digital Video Broadcasting (DVB) technology. The video channels are received with a suitable set top box. Capable of demodulating Motion Picture Engineering Group (MPEG-2) standard videos. It is for the return channel required for other services such as voice over internet protocol and broadband access data communications, that a return channel is also required for the home terminal. The return channel via the satellite is called RCS and is an open standard.
Hardware compatible with DVB-RCS technology are readily available in the market in both Ku-band and C-band. DVB-RCS is an international open standard for multimedia satellite network where the return data rates in access of 2 Mbps are possible using low cost user terminals. The forward ink is usually at 40 Mbps.
Today, most satellite TV customers in developed television markets get their programming through a direct broadcast satellite (DBS) provider, such as DISH TV or DTH platform. The provider selects programs and broadcasts them to subscribers as a set package. Basically, the provider’s goal is to bring dozens or even hundreds of channels to the customer’s television in a form that approximates the competition from Cable TV. Unlike earlier programming, the provider’s broadcast is completely digital, which means it has high picture and stereo sound quality. Early satellite television was broadcast in C-band - radio in the 3.4-gigahertz (GHz) to 7-GHz frequency range. Digital broadcast satellite transmits programming in the Ku frequency range (10 GHz to 14 GHz). There are five major components involved in a direct to home (DTH) satellite
A PATH TOWARDS DTH
On June 25, 1967, for two hours 26 nations of the world were joined together by an invisible electromagnetic grid utilizing four satellites. The London-based production, in glorious black and white, was the first-ever use of satellites to simultaneously interconnect remote corners of the world to a single program event. The program, appropriately entitled "Our World," included the Beatles debuting the song "All You Need Is Love" to an audience estimated at more than 600 million.
During the course of the telecast, live feeds were interconnected through a pair of early design Intelsats, an American experimental satellite (ATS-1), and a Russian Molniya class bird. The New York Times would write about the ground-breaking telecast, "Our World was a compelling reaffirmation of the potential of the home screen to unify the peoples of the world."
Less than three decades later, or approximately the period of one generation of mankind, more than 30 million homes in the world are equipped with their own satellite dishes. The early Intelsat, ATS, and Molniya satellites were capable of relaying one (or at most, two) simultaneous TV programs; each satellite of the current generation easily can deliver as many as 200 program channels to dish antennas less than one-thirtieth of the size required for reception of the original "Our World" telecast.
Well before the turn of the century, virtually any location in Asia or the Pacific will have direct access to hundreds of channels of TV, high-speed Internet links, and thousands of radio program channels. It is not an exaggeration to suggest that satellites are redesigning the very fabric of life by creating full-time universal access to "our world."
All of this technology creates virtually unlimited opportunities for new business enterprise and personal development. You are holding in your hand a key that will unlock for you, your family, and your business the "secrets" of the 21st century "Information Revolution." There has never been a point in the history of the world when so much opportunity has presented itself to mankind. Use what you learn here wisely and your life will forever be changed.